CN106816252B - A kind of manufacturing method of high insulation resistance FeSiCr metal soft magnetic materials - Google Patents
A kind of manufacturing method of high insulation resistance FeSiCr metal soft magnetic materials Download PDFInfo
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- CN106816252B CN106816252B CN201611241798.4A CN201611241798A CN106816252B CN 106816252 B CN106816252 B CN 106816252B CN 201611241798 A CN201611241798 A CN 201611241798A CN 106816252 B CN106816252 B CN 106816252B
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- 239000000843 powder Substances 0.000 claims abstract description 57
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- 238000000034 method Methods 0.000 claims abstract description 15
- 238000005245 sintering Methods 0.000 claims abstract description 13
- 238000002161 passivation Methods 0.000 claims abstract description 12
- 239000011248 coating agent Substances 0.000 claims abstract description 10
- 238000000576 coating method Methods 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 10
- IKZBVTPSNGOVRJ-UHFFFAOYSA-K chromium(iii) phosphate Chemical class [Cr+3].[O-]P([O-])([O-])=O IKZBVTPSNGOVRJ-UHFFFAOYSA-K 0.000 claims abstract description 6
- 238000000748 compression moulding Methods 0.000 claims abstract description 6
- 238000002844 melting Methods 0.000 claims abstract description 6
- 230000008018 melting Effects 0.000 claims abstract description 6
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- -1 melting Substances 0.000 claims abstract description 5
- BECVLEVEVXAFSH-UHFFFAOYSA-K manganese(3+);phosphate Chemical class [Mn+3].[O-]P([O-])([O-])=O BECVLEVEVXAFSH-UHFFFAOYSA-K 0.000 claims abstract description 4
- 239000011259 mixed solution Substances 0.000 claims abstract description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 12
- 239000011521 glass Substances 0.000 claims description 11
- 239000002245 particle Substances 0.000 claims description 11
- 239000011230 binding agent Substances 0.000 claims description 8
- 239000000243 solution Substances 0.000 claims description 8
- 229910052799 carbon Inorganic materials 0.000 claims description 7
- 238000012216 screening Methods 0.000 claims description 7
- 238000003723 Smelting Methods 0.000 claims description 6
- 229910052748 manganese Inorganic materials 0.000 claims description 6
- 239000011572 manganese Substances 0.000 claims description 6
- 229910052759 nickel Inorganic materials 0.000 claims description 6
- 229910052760 oxygen Inorganic materials 0.000 claims description 6
- 229910052698 phosphorus Inorganic materials 0.000 claims description 6
- 229910052717 sulfur Inorganic materials 0.000 claims description 6
- 229920001296 polysiloxane Polymers 0.000 claims description 5
- 239000012286 potassium permanganate Substances 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 102000016941 Rho Guanine Nucleotide Exchange Factors Human genes 0.000 claims description 3
- 108010053823 Rho Guanine Nucleotide Exchange Factors Proteins 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 239000011651 chromium Substances 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 claims description 2
- 229920001651 Cyanoacrylate Polymers 0.000 claims description 2
- MWCLLHOVUTZFKS-UHFFFAOYSA-N Methyl cyanoacrylate Chemical compound COC(=O)C(=C)C#N MWCLLHOVUTZFKS-UHFFFAOYSA-N 0.000 claims description 2
- DHKHKXVYLBGOIT-UHFFFAOYSA-N acetaldehyde Diethyl Acetal Natural products CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 claims description 2
- 125000002777 acetyl group Chemical class [H]C([H])([H])C(*)=O 0.000 claims description 2
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 claims description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 2
- 229920002554 vinyl polymer Polymers 0.000 claims description 2
- 239000003822 epoxy resin Substances 0.000 claims 1
- 229920000647 polyepoxide Polymers 0.000 claims 1
- 230000007547 defect Effects 0.000 abstract description 4
- 230000000052 comparative effect Effects 0.000 description 15
- 239000000463 material Substances 0.000 description 9
- 239000000047 product Substances 0.000 description 7
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- 229910045601 alloy Inorganic materials 0.000 description 5
- 239000000956 alloy Substances 0.000 description 5
- 239000002131 composite material Substances 0.000 description 5
- 239000004615 ingredient Substances 0.000 description 5
- 239000006247 magnetic powder Substances 0.000 description 5
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- 238000005516 engineering process Methods 0.000 description 4
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- 229910001004 magnetic alloy Inorganic materials 0.000 description 3
- 230000005389 magnetism Effects 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 238000003672 processing method Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 229910000859 α-Fe Inorganic materials 0.000 description 3
- 229910002796 Si–Al Inorganic materials 0.000 description 2
- 229910008458 Si—Cr Inorganic materials 0.000 description 2
- 229910000151 chromium(III) phosphate Inorganic materials 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- CPSYWNLKRDURMG-UHFFFAOYSA-L hydron;manganese(2+);phosphate Chemical compound [Mn+2].OP([O-])([O-])=O CPSYWNLKRDURMG-UHFFFAOYSA-L 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 229910003962 NiZn Inorganic materials 0.000 description 1
- 229910007933 Si-M Inorganic materials 0.000 description 1
- 229910008318 Si—M Inorganic materials 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
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- 210000000981 epithelium Anatomy 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N ferric oxide Chemical compound O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
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- 239000002344 surface layer Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
- H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
- H01F1/147—Alloys characterised by their composition
- H01F1/14766—Fe-Si based alloys
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/0253—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets
- H01F41/0266—Moulding; Pressing
Abstract
The invention discloses a kind of manufacturing method of high insulation resistance FeSiCr metal soft magnetic materials, including melting, gas and water combined atomizing sieves, powder classification proportioning, batch mixing, powder passivation, stirring coating, granulation, compression moulding and sintering step, wherein（6）Powder passivation：Powder is preheated to 75~90 DEG C of mixed solutions being added relative to 0.1~0.35wt% of powder manganese phosphates and 0.1~0.35wt% chromium phosphates, stirs 10~15min, then 120 DEG C dry 2 hours, sieve with 100 mesh sieve net.The present invention effectively overcomes existing for traditional handicraft the defects of insulation resistance is low, proof voltage is low, clad is uneven, not fine and close, the insulation resistance IR of the high insulation resistance FeSiCr metal soft magnetic materials made of the method for the present invention is more than 1G Ω, proof voltage is more than 100V, and magnetic conductivity is 60 (1 ± 20%).
Description
Technical field
The present invention relates to a kind of manufacturing methods of metal soft magnetic material, and in particular to a kind of high insulation resistance FeSiCr metals
The manufacturing method of soft magnetic materials.
Background technology
Currently, MnZn systems, NiZn systems or NiCuZn systems iron generally can be used in the material of the magnetic material as inductance component
Oxysome, they have higher magnetic conductivity and resistance rate (10 in high frequency2~108Ω cm), but due to its saturation flux density
Bs is relatively low, causes the direct current biasing characteristic of device insufficient.In recent years, electronic terminal product constantly to miniaturization, it is integrated,
The directions such as high current are developed, and in order to meet the requirement, research is converted to the material of magnetic substance from existing ferrite
The technology of FeSiCr metal soft magnetic materials continues to bring out.Compared with ferrite, the saturation magnetic of FeSiCr metal soft magnetic materials itself
Flux density is higher.On the contrary, compared with existing ferrite, the insulating properties (insulation resistance) of FeSiCr materials itself is significant lower,
Eddy-current loss is higher, and such inductance generally requires and carries out coiling and installation electrode directly on FeSiCr magnetic substances, so
Requirement to insulating properties and resistance to pressure is higher and higher.
Have the patent of the manufacturing method of some associated metal soft magnetic materials at home, it is specific as follows：
（1）Publication No. CN 102693801A, publication date 2012.09.26, entitled " magnetic material and use
The Chinese patent of its coil component " discloses offer magnetic material and uses its coil component.Especially being to provide one kind can
The novel magnetic material of insulation resistance and magnetic conductivity is improved simultaneously, meanwhile, the coil component using such magnetic material is provided.It should
Magnetic material includes particle formation body, and the particle formation body includes：Multiple metallics, including Fe-Si-M systems soft magnetism is closed
Gold (wherein, M is the metallic element more oxidizable compared with Fe)；And oxidation overlay film, it is formed in the surface of the metallic；And
The particle formation body (1) has：Intermediary engaging portion made of being formed in the oxidation overlay film of adjacent metal particle surface and not
In the presence of the mutual engaging portion of metallic in the part of oxidation overlay film.
（2）Publication No. CN 104028751B, publication date 2015.12.30, entitled " a kind of soft magnetic metal is multiple
The Chinese patent of the high-insulativity insulating wrapped processing method of condensation material ", which discloses, provides a kind of height of metal soft magnetic composite material
Insulating properties insulating wrapped processing method.This method comprises the following steps：1) metal magnetic is sieved and carries out grain size proportion；2) it utilizes
Sol-gal process is dried after carrying out insulating wrapped to the metal magnetic prepared；3) magnetic powder after drying is mixed with binder
Even, addition releasing agent is dry-pressing formed, is compressed into magnet ring；4) magnet ring is kept the temperature to 0.5 ~ 2h in protective atmosphere, air-cooled, spray
It applies, obtains target product.The present invention provides a kind of high-insulativity insulating wrapped processing methods of metal soft magnetic composite material, pass
The insulating wrapped technique generally existing poor insulativity of system coats the shortcomings of uneven, is coated using sol-gal process, insulating layer packet
It covers uniformly, insulating properties is high, and frequency stability is good, and MgO insulating layers have high resistivity, in the cladding MgO insulation of magnetic powder surface
Layer can greatly improve the resistivity of soft-magnetic composite material, and have higher magnetic conductivity and lower core loss.
（3）Publication No. CN 102282634A, publication date 2011.12.14, it is entitled " composite magnetic
Manufacturing method and use its compressed-core and its manufacturing method " Chinese patent offer be provided have in reply choke coil etc.
The excellent and composite magnetic of magnetic characteristic that can also be used in high-frequency region in terms of the miniaturization of magnetic element and high current
The manufacturing method of material and use its compressed-core and its manufacturing method.Compressed-core contains metallic magnetic powder and insulation material
Material, for metallic magnetic powder, makes it by the range that its Vickers hardness (Hv) is set as 230≤Hv≤1000 for insulating materials
Compressive strength is 10000kg/cm2Hereinafter, and be in mechanical damage state, it is folded in machine between metallic magnetic powder
The insulating materials of tool distress condition.
（4）Publication No. CN 104395972A, publication date 2015.03.04, it is entitled " magnetic substance composition and
The Chinese patent of coil component " discloses magnetic substance composition with Fe-Si-Cr systems, the Fe- for being formed with passivation epithelium on surface
The magnetic alloy particles such as Si-Al systems and softening point are 650~800 DEG C and the glass containing Si, B and K, Na, Li et al. alkali metal
Glass ingredient, relative to the total of above-mentioned magnetic substance alloy particle and above-mentioned glass ingredient, the content of above-mentioned glass ingredient is 12~
32wt% is mutually formed on the glass that above-mentioned glass ingredient is formed between above-mentioned magnetic alloy particle.It is embedded with coil-conductor 2
Component base 1 is formed by the magnetic substance composition.It, can between inhibiting moisture or plating solution to immerse magnetic alloy particle
Good insulating properties is ensured in the case where not damaging magnetic characteristic.
（5）Publication No. CN 104124021A, publication date 2014.10.29, entitled " soft-magnetic body combines
The Chinese patent of the manufacturing method of object, magnetic core, coil form electronic unit and formed body " disclose it is a kind of it is an object of the invention to
The soft-magnetic body composition that molded product intensity can be improved and its manufacturing method and coil form electronic unit are provided.It has
Multiple non-retentive alloy particles and the soft-magnetic body composition for being present in the intergranular crystal boundary of non-retentive alloy.Soft magnetism is closed
Gold particle is made of Fe-Si-Cr systems alloy or Fe-Si-Al systems alloy, and in at least three phase point of crystal boundary, there are carriers
Grain, there are phases containing Si around carrier granular.
Invention content
Technical problem to be solved by the invention is to provide a kind of manufactures of high insulation resistance FeSiCr metal soft magnetic materials
Method effectively overcomes existing for traditional handicraft the defects of insulation resistance is low, proof voltage is low, clad is uneven, not fine and close,
The insulation resistance IR of the high insulation resistance FeSiCr metal soft magnetic materials made of the method for the present invention is more than 1G Ω, and proof voltage is big
In 100V, magnetic conductivity is 60 (1 ± 20%).
The technical proposal for solving the technical problem of the invention is：A kind of high insulation resistance FeSiCr metal soft magnetic materials
Manufacturing method, including melting, gas and water combined atomizing, screening, powder classification proportioning, batch mixing, powder passivation, stirring coating, system
Grain, compression moulding and sintering step,
（1）Melting：It is carried out in smelting furnace, smelting temperature is 1580 DEG C~1680 DEG C, and silicone content is 3.5 in principal component
~7.0wt%, Cr content are 4.5~6.0wt%, and surplus is iron and Mn, Ni, C, S, P, O, the wherein content of Mn, Ni, C, S, P, O
The sum of be less than 0.25wt%；
（2）Gas and water combined atomizing：Using gas and water combined atomizing, controls O content in powder and be less than 0.15wt%；
（3）Screening：It is sieved using different meshes sieve；
（4）Powder classification matches：Wherein -500 mesh account for 55%, and -600 mesh account for 35%, and -800 mesh account for 10%；
（5）Batch mixing：It is carried out in three-dimensional motion mixer, powder of the grade separation than after is uniformly mixed；
（6）Powder passivation：Powder be preheated to 75~90 DEG C be added relative to 0.1~0.35wt% of powder manganese phosphates and 0.1~
The mixed solution of 0.35wt% chromium phosphates stirs 10~15min, then 120 DEG C dry 2 hours, sieve with 100 mesh sieve net；
（7）Stirring coating：Added successively into the powder after passivation 0.10~0.45wt% of powder quality potassium permanganate,
The nanometer B of the glass powder of 0.05~0.15wt%, the nano-ZnO of 0.06~0.10wt%, 0.10~0.40wt%2O3And 7~
The binder solution of 20wt%, stirring at normal temperature to paste, shady and cool 1~3 hour；
（8）Granulation：Powder after stirring coating is crossing 60 mesh and 240 mesh sieve, takes -60~+240 powder addition suitable
In the releasing agent of -60~+240 0.1~0.9wt% of mesh powder weight, it is uniformly mixed to constitute and completes powder；
（9）Compression moulding：It will complete powder to suppress to obtain blank using powder former, the pressed density control of blank exists
(6.25±0.10)g/cm3；
（10）Sintering：It is sintered in the resistance furnace of ventable body, whole process is passed through dry compressed air, sintering temperature
Control keeps the temperature 120~180 minutes, cools to room temperature after sintering with the furnace at 870~980 DEG C.
As a preferred embodiment, it is 4.0~5.0 μm that the screening diameter of particle, which requires D10, D50 is 10.0~18.0 μm,
D90 is 30~41 μm.
As a preferred embodiment, the binder solution is cyanoacrylate, Pioloform, polyvinyl acetal, single-component epoxy tree
It is one or more in fat, butyl acetate, silicones.
As a preferred embodiment, the high insulation FeSiCr metal soft magnetic materials, insulation resistance IR are more than 1G Ω, resistance to electricity
Pressure is more than 100V, and magnetic conductivity is 60 (1 ± 20%), adapts to surface mount power inductance and is wanted to high performance Fe SiCr soft magnetic materials
It asks.
The beneficial effects of the invention are as follows:The present invention effectively overcomes that insulation resistance existing for traditional handicraft is low, proof voltage
It is low, clad is uneven, it is not fine and close wait for defect, using the method for the present invention make high insulation resistance FeSiCr metal soft magnetic materials
Insulation resistance IR be more than 1G Ω, proof voltage be more than 100V, magnetic conductivity be 60 (1 ± 20%).
Description of the drawings
Fig. 1 is FeSiCr original powders SEM figures prepared by gas and water combined atomizing method of the embodiment of the present invention.
Fig. 2 is insulation resistance of embodiment of the present invention IR and proof voltage U measurement method schematic diagrames, wherein 1 is ontology, 2 be survey
Try end.
The present invention will be further described below in conjunction with the accompanying drawings.
Specific implementation mode
A kind of manufacturing method of high insulation FeSiCr metal soft magnetic materials, is as follows：
（1）Melting：It is carried out in smelting furnace, smelting temperature is 1580 DEG C~1680 DEG C, and silicone content is 3.5 in principal component
~7.0wt%, Cr content are 4.5~6.0wt%, and surplus is the impurity such as iron and inevitable Mn, Ni, C, S, P, O, wherein can not
The sum of impurity contents such as Mn, Ni, C, S, P, the O avoided are less than 0.25wt%.
（2）Gas and water combined atomizing：Using gas and water combined atomizing, controls O content in powder and be less than 0.15wt%, such as attached drawing 1
It is shown；
（3）Screening：It is sieved using different meshes sieve；
（4）Powder classification matches：Wherein -500 mesh account for 55%, and -600 mesh account for 35%, and -800 mesh account for 10%；
（5）Batch mixing：It is carried out in three-dimensional motion mixer, powder of the grade separation than after is uniformly mixed；
（6）Powder passivation：Powder be preheated to 75~90 DEG C be added relative to 0.1~0.35wt% of powder manganese phosphates and 0.1~
The mixed solution of 0.35wt% chromium phosphates stirs 10~15min, then 120 DEG C dry 2 hours, sieve with 100 mesh sieve net；
（7）Stirring coating：Added successively into the powder after passivation 0.10~0.45wt% of powder quality potassium permanganate,
The nanometer B of the glass powder of 0.05~0.15wt%, the nano-ZnO of 0.06~0.10wt%, 0.10~0.40wt%2O3And 7~
The binder solution of 20wt%, stirring at normal temperature to paste, shady and cool 1~3 hour；
（8）Granulation：Powder after stirring coating is crossing 60 mesh and 240 mesh sieve, takes -60~+240 powder addition suitable
In the releasing agent of -60~+240 0.1~0.9wt% of mesh powder weight, it is uniformly mixed to constitute and completes powder.
（9）Compression moulding：It will complete powder to suppress to obtain blank using powder former, the pressed density control of blank exists
(6.25±0.10)g/cm3；
（10）Sintering：It is sintered in the resistance furnace of ventable body, whole process is passed through dry compressed air, sintering temperature
Control keeps the temperature 120~180 minutes, cools to room temperature after sintering with the furnace at 870~980 DEG C.
By the above process be made the high insulation FeSiCr metal soft magnetic material magnet rings sample (Φ 14mm × Φ 8mm ×
3mm)。
Sintered magnet ring is tested and evaluated respectively.With HP-4284A type LCR testers measure sample f=
Inductance when 10kHz, 10mV, 25 DEG C, by formula（1）Calculate initial permeability μi；With SY-8218 type B-H analyzer test samples
Saturation flux density Bs；According to the insulated electro of 9051HIPOT TESTER pressure tester test samples of method shown in Fig. 2
IR and proof voltage U is hindered, the testing time is 3 seconds.
Wherein：μiIt is initial permeability；L is product inductance（H）；N is umber of turn；D is samples outer diameter（mm）；D is sample
Product internal diameter（mm）；H is thickness of sample（mm）.
Below by embodiment, and comparative example is combined, technical scheme of the present invention is further described, and is surveyed
Examination and evaluation.
The proportioning components of 1 embodiment and comparative example of table
| Ingredient wt% | Si | Cr | Fe | Manganese phosphate | Chromium phosphate | Potassium permanganate | Glass powder | Nano-ZnO | Nanometer B2O3 | Binder solution |
| Embodiment 1 | 6.3 | 5.2 | 88.3 | 0.23 | 0.20 | 0.25 | 0.10 | 0.08 | 0.22 | 12 |
| Embodiment 2 | 6.3 | 5.2 | 88.3 | 0.23 | 0.20 | 0.10 | 0.10 | 0.08 | 0.22 | 12 |
| Embodiment 3 | 6.3 | 5.2 | 88.3 | 0.23 | 0.20 | 0.40 | 0.10 | 0.08 | 0.22 | 12 |
| Embodiment 4 | 6.3 | 5.2 | 88.3 | 0.23 | 0.20 | 0.25 | 0.15 | 0.08 | 0.22 | 12 |
| Embodiment 5 | 6.3 | 5.2 | 88.3 | 0.23 | 0.20 | 0.25 | 0.10 | 0.10 | 0.22 | 12 |
| Comparative example 1 | 6.3 | 5.2 | 88.3 | 0 | 0 | 0.25 | 0.10 | 0.08 | 0.22 | 12 |
| Comparative example 2 | 6.3 | 5.2 | 88.3 | 0.23 | 0.20 | 0 | 0.10 | 0.08 | 0.22 | 12 |
| Comparative example 3 | 6.3 | 5.2 | 88.3 | 0.23 | 0.20 | 0.25 | 0 | 0.08 | 0.22 | 12 |
| Comparative example 4 | 6.3 | 5.2 | 88.3 | 0.23 | 0.20 | 0.25 | 0.10 | 0 | 0.22 | 12 |
| Comparative example 5 | 6.3 | 5.2 | 88.3 | 0.23 | 0.20 | 0.25 | 0.10 | 0.08 | 0.50 | 6 |
The magnetic property of 2 embodiment and comparative example of table
| Project | μi | IR(GΩ) | U(V) | Bs(mT) |
| Index | 60(1±20%) | >1 | >100 | >950 |
| Embodiment 1 | 61 | 2.5 | 122 | 973 |
| Embodiment 2 | 66 | 1.2 | 104 | 963 |
| Embodiment 3 | 52 | 3.2 | 130 | 968 |
| Embodiment 4 | 55 | 2.9 | 128 | 958 |
| Embodiment 5 | 70 | 1.8 | 106 | 952 |
| Comparative example 1 | 81* | 0.2* | 42* | 970 |
| Comparative example 2 | 77* | 0.56* | 83* | 969 |
| Comparative example 3 | 63 | 0.45* | 75* | 971 |
| Comparative example 4 | 42* | 2.8 | 125 | 956 |
| Comparative example 5 | 34* | 4.5 | 300 | 730* |
Note:More than additional " * " of specification limit.
Table 2 lists performance and the evaluation of embodiment and comparative example, from Table 2, it can be seen that the embodiment of the present invention and
Comparative example compares, and high insulation FeSiCr metal soft magnetic materials provided by the invention effectively overcome existing for traditional handicraft
Insulation resistance is low, proof voltage is low, clad is uneven, unsound defect, and the target product insulation resistance IR of preparation is more than 1G
Ω, proof voltage are more than 100V, and magnetic conductivity is 60 (1 ± 20%), has adapted to surface mount power inductance to high performance Fe SiCr soft magnetisms
The requirement of material is conducive to magnetic core product and is mounted directly electrode.Addition manganese phosphate and chromium phosphate contribute to obtain cleaning metal
Surface improves rustless property and makes passivation of metal surfaces, convenient for stirring coating；Potassium permanganate releases oxygen in sintering process,
So that metal surface obtains the oxide layer of even compact；Nano-ZnO can optimize and revise the magnetic conductivity of material, glass powder and nanometer
B2O3The insulation resistance and proof voltage of material can be improved, the addition of binder solution is molding and the requirement of processing technology.
Specific embodiment described in the invention be only the present invention is given an example, the expert of correlative technology field or
Technical staff can make described specific embodiment different degrees of modification, supplement or substituted with similar mode, but
Without departing from the spirit of the invention or going beyond the scope defined by the appended claims.
Claims (4)
1. a kind of manufacturing method of high insulation resistance FeSiCr metal soft magnetic materials, including melting, gas and water combined atomizing, screening,
Powder classification matches, batch mixing, powder passivation, stirring coating, granulation, compression moulding and sintering step, it is characterised in that：
（1）Melting：Carried out in smelting furnace, smelting temperature be 1580 DEG C~1680 DEG C, in principal component silicone content be 3.5~
7.0wt%, Cr content be 4.5~6.0wt%, surplus be iron and Mn, Ni, C, S, P, O, wherein the content of Mn, Ni, C, S, P, O it
With less than 0.25wt%；
（2）Gas and water combined atomizing：Using gas and water combined atomizing, controls O content in powder and be less than 0.15wt%；
（3）Screening：It is sieved using different meshes sieve；
（4）Powder classification matches：Wherein -500 mesh account for 55%, and -600 mesh account for 35%, and -800 mesh account for 10%；
（5）Batch mixing：It is carried out in three-dimensional motion mixer, powder of the grade separation than after is uniformly mixed；
（6）Powder passivation：Powder be preheated to 75~90 DEG C be added relative to 0.1~0.35wt% of powder manganese phosphates and 0.1~
The mixed solution of 0.35wt% chromium phosphates stirs 10~15min, then 120 DEG C dry 2 hours, sieve with 100 mesh sieve net；
（7）Stirring coating：Added successively into the powder after passivation 0.10~0.45wt% of powder quality potassium permanganate, 0.05
The nanometer B of the glass powder of~0.15wt%, the nano-ZnO of 0.06~0.10wt%, 0.10~0.40wt%2O3And 7~20wt%
Binder solution, stirring at normal temperature to paste, shady and cool 1~3 hour；
（8）Granulation：Powder after stirring coating is crossing 60 mesh and 240 mesh sieve, takes -60~+240 powder to be added and is equivalent to -60
The releasing agent of~+240 0.1~0.9wt% of mesh powder weight is uniformly mixed to constitute and completes powder；
（9）Compression moulding：It will complete powder to suppress to obtain blank using powder former, the pressed density of blank is controlled (6.25
±0.10)g/cm3；
（10）Sintering：It is sintered in the resistance furnace of ventable body, whole process is passed through dry compressed air, sintering temperature control
At 870~980 DEG C, 120~180 minutes are kept the temperature, cools to room temperature after sintering with the furnace.
2. the manufacturing method of high insulation resistance FeSiCr metal soft magnetic materials as described in claim 1, it is characterised in that：It is described
Screening diameter of particle require D10 be 4.0~5.0 μm, D50 be 10.0~18.0 μm, D90 be 30~41 μm.
3. the manufacturing method of high insulation resistance FeSiCr metal soft magnetic materials as described in claim 1, it is characterised in that：It is described
Binder solution be cyanoacrylate, Pioloform, polyvinyl acetal, one-component epoxy resin, butyl acetate, one in silicones
Kind is a variety of.
4. the manufacturing method of the high insulation resistance FeSiCr metal soft magnetic materials as described in claims 1 to 3 is any, feature exist
In：The high insulation FeSiCr metal soft magnetic materials, insulation resistance IR are more than 1G Ω, and proof voltage is more than 100V, magnetic conductivity
For 60 (1 ± 20%), requirement of the surface mount power inductance to high performance Fe SiCr soft magnetic materials is adapted to.
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| CN113410020B (en) * | 2021-05-14 | 2022-11-18 | 华南理工大学 | FeSiCr magnetic powder core and preparation method thereof |
| CN114472878B (en) * | 2022-02-07 | 2023-04-11 | 山东恒瑞磁电股份有限公司 | Preparation method and application of integrally-formed soft magnetic powder for inductor |
| CN115475935B (en) * | 2022-10-27 | 2023-08-22 | 广东金泓新材料有限公司 | Preparation method of iron-based soft magnetic composite powder and iron-based soft magnetic composite powder |
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